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  4. Microkinetic Molecular Volcano Plots for Enhanced Catalyst Selectivity and Activity Predictions
 
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Microkinetic Molecular Volcano Plots for Enhanced Catalyst Selectivity and Activity Predictions

Worakul, Thanapat  
•
Laplaza, Ruben  
•
Das, Shubhajit  
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June 17, 2024
Acs Catalysis

Molecular volcano plots, which facilitate the rapid prediction of the activity and selectivity of prospective catalysts, have emerged as powerful tools for computational catalysis. Here, we integrate microkinetic modeling into the volcano plot framework to develop "microkinetic molecular volcano plots". The resulting unified computational framework allows the influence of important reaction parameters, including temperature, reaction time, and concentration, to be quickly incorporated and more complex situations, such as off-cycle resting states and coupled catalytic cycles, to be tackled. Compared to previous generations of molecular volcanoes, these microkinetic counterparts offer a more comprehensive understanding of catalytic behavior, in which selectivity and product ratios can be explicitly determined by tracking the evolution of each product concentration over time. This is demonstrated by examining two case studies, rhodium-catalyzed hydroformylation and metal-catalyzed hydrosilylation, in which the unique insights provided by microkinetic modeling, as well as the ability to simultaneously screen catalysts and reaction conditions, are highlighted. To facilitate the construction of these plots/maps, we introduce mikimo, a Python program that seamlessly integrates with our previously developed automated volcano builder, volcanic.

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worakul-et-al-2024-microkinetic-molecular-volcano-plots-for-enhanced-catalyst-selectivity-and-activity-predictions.pdf

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